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ENVIRONMENTAL AUDIT, INC. <br /> 1000-A ORTEGA WAY • PLACENTIA, CA 92870-7162 <br /> 714/632-8521 FAX: 714/632-6754 <br /> October 30 2000 <br /> EAI Project No; 1232 <br /> Mr. Mike Infurna n (� <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue NOV 0 2 2000 <br /> Stockton, CA 95202 <br /> ENVIRONMENT HEALTH <br /> SUBJECT: PERMIT APPLICATION FOR CPT BORINGS PERMIT/SERVICES <br /> San Joaquin Delta College <br /> 5151 Pacific Avenue, Stockton, California <br /> Dear Mr. Infurna: <br /> Environmental Audit, Inc. (EAI), on behalf of Union Oil Company of California (Unocal) and <br /> Montgomery Wards, LLC (Wards) is submitting the enclosed permit application for six 150- <br /> foot deep CPT borings around the Robinhood Irrigation Well (RIW) located on the campus of <br /> San Joaquin Delta College. <br /> Unocal and Wards formerly had underground storage tanks (USTs) on their sites at 5606 <br /> Pacific Avenue and 5400 Pacific Avenue, respectively (see Figure 1). Ground water <br /> monitoring data for the Unocal and Wards sites show that pumping of the RIW influences and <br /> changes the natural direction of ground water flow in the area from easterly, to towards the <br /> RIW. The San Joaquin County Public Health Services, Environmental Health Division codes <br /> for the Unocal and Wards sites are: <br /> Site Name Site Address Site Code <br /> Unocal 5606 Pacific Avenue 2162 <br /> Wards 5400 Pacific Avenue 2163 <br /> Sampling of the RIW by Unocal and/or Wards for dissolved petroleum constituents began in <br /> 1997 and continued through June 15, 2000. In August 2000, Delta College students and staff <br /> reportedly complained of a gasoline odor from the water derived from the RIW. <br /> As requested by the California Regional Water Quality Control Board, Central Valley Region <br /> (RWQCB), the RIW was taken out of service as of 6:00 AM August 22, 2000, and may not be <br /> put back into use without prior RWQCB approval. <br /> PLANNING,ENVIRONMENTAL ANALYSES AND <br /> HAZARDOUS SUBSTANCES MANAGEMENT AND REMEDIATION <br />